I'm not quite sure I love it enough to, say, pull an all-nighter on Black Friday in the name of scoring some of the best deals.

It was a party we looked forward to all year — an excuse to pull an all-nighter outside when normally we’d be under curfew in the dorms, followed by the reward of towers of pancakes as night turned into morning.

Don’t actually pull an all-nighter: If you have to teach yourself six chapters of anatomy, it’s tempting to stay up all night in order to do so. But, according to this study from ScienceDaily, your brain actually loses efficiency with each hour of sleep deprivation (thiếu ngủ). The study recommends studying in small 20-30 minute increments multiple times per day a few days before your test.

The findings have surprised scientists as having a longer index finger is associated with having more typical female characteristics. The longer index finger and shorter ring finger have been linked to being exposed to higher levels of female sex hormones in the womb. It was assumed that women who were 'more feminised' would be more likely to be satisfied with their romantic relationships, and to be less impulsive (hấp tấp, bốc đồng).

Being more exposed to the sex hormone oestrogen in the womb leads to women's index fingers growing longer than their ring finger.

By contrast, being exposed to more of the male sex hormone testosterone in the womb has a more 'masculinising' effect - and results in a longer ring finger and a shorter index finger.